Python 3.5.1 (v3.5.1:37a07cee5969, Dec  5 2015, 21:12:44)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import binascii
>>>
>>> total_addresses = 754
>>> blockhash = "00000000000000000187a165338f220262346e5fe53533d6e611dc9716b71c11"
>>> hash_bytes = binascii.unhexlify(blockhash)
>>> winner_index = int.from_bytes(hash_bytes,byteorder="little")%total_addresses
>>> print(winner_index)
16